BTW, for anyone who wants to experiment with adding a wide variety of .deb repositories (that is, for anyone who makes assiduous backups):
https://sites.google.com/site/mydebiansourceslist/Home
I remember trading info on obscure .deb repos with Craig years before he started this page. Now I find he has certainly the most informative single resource for .debs on the net. Also, I am certain Craig would be interested to here of more repos. (Knoppix is on there.)
Fortinet FortiGate 60F | 10 Gbps Firewall Network Security EXPIRED (FG-60F)- New
$226.79
Palo Alto PA-220 Next Generation Firewall Appliance w/ Power Adapter and Cord
$59.99
Palo Alto PA-820 Firewall Security Appliance
$120.00
Dell SonicWALL TZ500 Firewall 8-Port Network Security Appliance APL29-0B6
$40.00
pfSense five-port Gigabit router/firewall on Barracuda F18b hardware
$79.00
Cisco ASA5506-K9 ASA 5506-X Network Security Firewall
$40.00
Fortinet FortiWiFi-60E Network Security Appliance - White
$38.40
Cisco Meraki MX84 Cloud Managed Security Firewall Appliance UNCLAIMED MX84-HW
$39.99
1U BareMetal pfsense opnsense Router Firewall DNS Server 6x 10GB Ethernet Ports
$149.00
Fortinet Fortigate FG-61E Firewall Network Security Appliance ATP Bundle 1 years
$263.99